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Comparison of diversity of the vaginal microbiota.
| + | ++ | |
|---|---|---|
| Control (n = 25) | 20 (85%) | 5 (15%) |
| Embryonic miscarriage (n = 25) | 8 (32%) | 17 (68%) |
Bacterial density was divided into four levels according to the number of bacteria: grade 1 (+) as 1–3 kinds of bacterium; grade 2 (++) as 4–6 kinds of bacterium; grade 3 (+++) as 7–10 kinds of bacterium; and grade 4 (++++) as more than 10 kinds of bacterium. The metered data is recorded in N (%), p < 0.001.
